Magnetostrictive device
US5982054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1996 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Sep 25, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/101
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a multi-purpose type magnetostrictive device that may be used as an acceleration sensor or a vibration sensor capable of detecting forces acting in more than one direction and which may also be employed as a torque sensor, an actuator, a motor and the like. Coils 110 to 310 of magnetostrictive bodies 10 to 30 are wound around magnetostrictive members 120 to 320 in such a manner that voltages corresponding to enlongation/contraction of the magnetostrictive members 120 to 320 are generated. The magnetostrictive members 120 to 320 are each constrained at the two ends. The magnetic circuits 130 to 330 apply a bias magnetic field to the magnetostrictive members 120 to 320. The magnetostrictive bodies 10 to 30 are positioned so that they are all aligned in the direction of the Z axis which is taken in the direction of the two ends of each of the magnetostrictive members 120 to 320 and they are also arranged in such a manner that a relationship is maintained in which, on the flat plane formed by the X axis and the Y axis running at a right angle to the direction of the Z axis, a polygonal flat plane S is constituted by connecting the points P1 to P3 at which the magnetostrictiv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.